[Elecraft] K2 front panel LCD soldering

[Don Wilhelm]

Conrad,

The support is not the only issue (although it may make the LCD 
backlight mounting more sturdy).
The problem was that for a period of time, the leads on the backlight 
assembly from the vendor were too short, and those backlight assemblies 
with short leads must use the instructions on the errata page  this 
situation has since been corrected with the vendor.  If your backlight 
assembly has leads of a sufficient length to use the spacers and still 
allow soldering on the solder side of the board, then yes, you can 
ignore the errata and use the original instructions.  In other words, 
look at the lead length you have with your K2 kit and do "what is 
right".  The one thing that is important is to get the backlight 
assembly LEDs adequately soldered to the pads on the Front Panel board, 
and spaced up so the backlight assembly fits nicely below the LCD 
display module.

73,
Don W3FPR

Conway Yee wrote:
> On page 27, right column of the current K2 construction manual, the
> revised instructions tell me to place the spacers beside the LCD leads and
> remove the spacers after soldering.  The original instructions tell me to
> place the LCD leads THROUGH the holes in the spacer.  Presumably these
> spacers are the LCD spacers broken from the RF probe/switch spacer at the
> beginning of the construction.
>
> Why did they change the instructions?  What is the advantage?
>
> Not knowing the benefits of the new instructions, it would appear that the
> old instructions make more sense.  The new method leaves the LCD supported
> by only the leads.  The spacers add support.
>
> tnx.
> Conway Yee, N2JWQ
>
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